JHS Superbolt Valco Supro Amp TonesFrom the inception of the Supro Company in 1935 until its closing in 1968, no other brand of amplifier has had such a fascinating, mysterious and legendary story. The Supro amps deliver the voice of rock and roll, from Jimmy Pages legendary Led Zeppelin recordings or Brian Setzers early Stray Cat tracks, to the raging rhythm tones of Switchfoots Drew Shirley. If you have ever played one of these vintage amps then you know nothing sounds the same. No